Question

with the help of a labelled diagram describe the life cycle of silkworm.​

Answer 1

• Heya user !

Diagram is in the attachment above

Answer 2

Answer:

a) Egg stage: Characteristics of silkworm during egg stage are:

—It is white in color and its size is the size of pin head.

—300 eggs are laid at a time.

—An egg hatches into larvae under suitable condition i.e. 18c – 25c.

b) Larvae stage: Characteristics of silkworm during larvae stage are:

—This stage lasts for about a month.

—A newly formed larvae is brown in color and is 6 millimeters long.

—A larvae molts up to 4 times. After each moulting it lies inactive for about 20 to 24 hours.

—A matured larvae changes into a cocoon.

c) Pupae stage: Characteristics of a silkworm in pupae stage are:

—This stage lasts for 12-14 days.

—A pupae does not move or feed.

—Silk thread is extracted during this stage.

d) Adult stage: Characteristics of a silkworm during adult stage are:

—It has 3 pairs of legs and 2 pairs of wings.  

—It lives for 5 to 7 days.

Explanation: